Fraternal or dizygotic twins develop from two different eggs fertilized by separate sperm; they generally share about 50 percent of their genes. Therefore, fraternal twins are essentially like ...

An interview with Paula and Bridgette Powers—identical twins who witnessed their mother's carjacking—recently went viral. The way they spoke and gestured in unison has captivated global audiences.

Fraternal twins can have different sexes and appearances and are no more genetically related than any other siblings with the same parents. Two gene variants discovered in 2016 increase the odds ...

Fraternal, or dizygotic, twins share 50 percent of their genes. If identical twins share a trait to a greater degree than fraternal twins do, it’s safe to conclude that the relevant gene ...

The greater resemblance between identical twins than between fraternal twins is consistent with the view that genetic factors influence the behavioral characteristic or physical trait under study. Of ...

Fraternal or dizygotic twins develop from two different eggs fertilized by separate sperm; they generally share about 50 percent of their genes. Therefore, fraternal twins are essentially like ...